Document Type

Article

Publication Date

8-2012

Journal or Book Title

Ultrasonics

Volume

52

Issue

6

First Page

720

Last Page

729

DOI

10.1016/j.ultras.2012.01.011

Abstract

In this study, we perform statistical analysis on two methods used to estimate the total ultrasound attenuation along the propagation path from the surface of the transducer to a region of interest at a particular depth; namely, the spectral-fit method and the multiple-filter method. We derive mathematical equations for the bias and variance in the attenuation estimates as a function of region of interest (ROI) size, imaging system bandwidth, and number of independent Gaussian filters (for the multiple filter method). We use numerical simulations to validate the mathematical equations and compare the two algorithms. The results show that the variance in the total attenuation coefficient estimates obtained with the two methods are comparable, and that the estimates are unbiased. For the multiple filter method, the optimal number of Gaussian filters is two.

Comments

This is an accepted author's manuscript of an article from Ultrasonics 52 (2012): 720–729, doi:10.1016/j.ultras.2012.01.011. Posted with permission.

Copyright Owner

Elsevier B.V.

Language

em

File Format

application/pdf

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